Discharge port opening and closing valve for metallurgical submerged arc furnace

Abstract

The utility model discloses a discharge port opening and closing valve for a metallurgy submerged arc furnace. The discharge port opening and closing valve comprises a receiving hopper assembly, a discharge pipe is arranged above the receiving hopper assembly, a flange is arranged at the bottom of the discharge pipe, and a door plate assembly is arranged below the receiving hopper assembly. The discharge port opening and closing valve for the metallurgical submerged arc furnace solves the problems that an existing discharge port opening and closing valve is prone to abrasion and unsmooth in opening and closing action.

Description

Technical Field

[0001] This utility model belongs to the technical field of metallurgical submerged arc furnace equipment, and relates to a discharge port opening and closing valve for metallurgical submerged arc furnaces. Background Technology

[0002] Submerged arc furnaces are crucial equipment in the metallurgical industry. They are primarily used for reducing and smelting ores, carbonaceous reducing agents, and solvents, and are also known as electric arc furnaces or resistance furnaces. They mainly produce important industrial raw materials in the metallurgical industry, such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, and ferrosilicon-manganese alloys, as well as chemical raw materials like calcium carbide. The smelting process is a continuous and prolonged reaction, with furnace temperatures typically exceeding 2000℃. When adjusting the feed ratio or replacing spare parts, sufficient raw materials need to be added to the furnace promptly to quickly resolve any issues. Currently, after metal is produced, the discharge port of existing submerged arc furnaces is in a fixed state. Typically, a gate valve is installed on the furnace's feed pipe for material discharge control.

[0003] Slide gate valves are typically installed at the bottom of the hopper. Opening and closing them requires an external device such as a hydraulic or pneumatic cylinder. The cylinder applies force to open or close the valve, achieving the switching effect. When material needs to be added, the feeding cart moves to below the material pipe outlet, the valve opens, and the material in the material pipe falls into the cart's hopper through the discharge pipe. The feeding cart then moves to the furnace opening and pushes the hopper, pushing the material into the furnace.

[0004] Under harsh operating conditions, some material often adheres to the valve plate during its movement. This material gets stuck in the gaps between the valve plate, the feed pipe, and the valve body, causing the valve to jam, affecting the normal supply of raw materials, and in severe cases, damaging the hydraulic / pneumatic cylinder. In addition, existing hydraulic / pneumatic valves require the reciprocating motion of the hydraulic / pneumatic cylinder for power. The existing discharge port opening and closing valve structure is complex. During the feeding process of the entire feed pipe, the opening and closing valve often wears through, leading to material leakage, which adversely affects production, makes maintenance and repair difficult, increases production costs and downtime, and the opening and closing action of the valve is not smooth. When the material layer is thick, the discharge port often jams, easily blocking the feed pipe, affecting the normal supply of raw materials, and thus reducing smelting efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a discharge port opening and closing valve for metallurgical submerged arc furnaces, which solves the problems of existing discharge port opening and closing valves being easily worn through and having unsmooth opening and closing actions.

[0006] The technical solution adopted in this utility model is a discharge port opening and closing valve for a metallurgical submerged arc furnace, including a hopper assembly, a discharge pipe above the hopper assembly, a flange at the bottom of the discharge pipe, and a door panel assembly below the hopper assembly.

[0007] The present invention is further characterized in that,

[0008] The receiving bucket assembly includes an upper plate, which is a rectangular plate with a through hole in the center. Below the upper plate, one feeding plate a, two feeding plates b, and one feeding plate c are vertically arranged around it. Feeding plates a and c are positioned opposite each other, and two feeding plates b are positioned opposite each other between feeding plates a and c. The feeding plates a, b, and c form a whole enclosure below the upper plate, forming a feeding channel. A baffle is inclinedly installed at the bottom of the feeding channel.

[0009] The blanking plate a includes a vertical section a, which is integrally connected to the bottom of the upper plate. A bent section b is integrally connected to the bottom of the vertical section a. The angle between the vertical section a and the bent section b is an obtuse angle, and the bottom edge of the bent section b is a horizontal straight line.

[0010] The blanking plate c includes a vertical section c, which is integrally connected to the lower part of the upper plate. The vertical section c is positioned opposite to the vertical section a, and the length of the vertical section c is not shorter than that of the vertical section a. The lower part of the vertical section c is integrally connected to the first bending section c, and the angle between the vertical section c and the first bending section c is an obtuse angle. The lower part of the first bending section c is integrally connected to the second bending section c, which bends towards the side closer to the bending section b. The bottom edge of the second bending section c is a horizontal straight line, and the bottom surface of the second bending section c is on the same plane as the bending section b.

[0011] Lining plates are laid inside the bending section b, the first bending section c, and the second bending section c.

[0012] The shapes of the two feeding plates b match those of the feeding plates a and c, and the bottom edges of the two feeding plates b are arc-shaped. Each feeding plate b is integrally provided with a support plate relative to the first bending section c. Rotating holes are opened opposite each other on the upper part of the two support plates. Rotating shafts are rotatably connected inside the two rotating holes. The rotating shafts extend out of the outer periphery of the feeding channel. Rotating plates are respectively fitted at both ends of the rotating shafts, and bushings are fitted on the rotating shafts.

[0013] The door panel assembly includes two rotating plates, which are fan-shaped. The outer arc of the rotating plate matches the bottom arc of the material feeding plate b. An arc plate is set between the bottom edges of the two rotating plates, and the arc plate fits tightly against the material feeding channel outlet. A base plate is vertically set on the lower surface of the arc plate, and a counterweight shaft is horizontally set on one side of the middle of the base plate. A counterweight block is set at the end of the counterweight shaft.

[0014] Several limiting blocks are set on the outer walls of both feeding plates b.

[0015] Several reinforcing ribs b are installed between the base plate and the counterweight shaft.

[0016] The rotating plate is uniformly equipped with several stiffeners along its diameter.

[0017] The beneficial effects of this utility model are as follows: This utility model is used for the opening and closing valve of the discharge port of a metallurgical submerged arc furnace. A hopper assembly and a door plate assembly are set on the discharge pipe to control the discharge. The discharge channel is formed by the integrated cooperation of the discharge plate a, two discharge plates b, and one discharge plate c, which improves the reliability and stability of the discharge flow and achieves rapid discharge without jamming. The door plate assembly is equipped with a counterweight to ensure that it maintains a stable closed state when not subjected to external force. The hopper assembly is connected to the door plate assembly through a rotating shaft to ensure that the rotating plate opens and closes smoothly in the horizontal direction, reducing the failure rate and improving the smelting production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the discharge port opening and closing valve of the present invention for a metallurgical submerged arc furnace.

[0019] Figure 2 This is a side view of the discharge port opening and closing valve of the present invention for a metallurgical submerged arc furnace.

[0020] Figure 3 This is a schematic diagram of the structure of the bucket assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the door panel assembly structure of this utility model.

[0022] In the diagram, 1. Flange, 2. Discharge pipe, 3. Reinforcing rib plate a, 4. Hopper assembly, 5. Limiting block, 6. Door panel assembly, 7. Counterweight block, 8. Rotating shaft, 9. Upper plate, 10. Discharge plate a, 11. Liner, 12. Baffle, 13. Discharge plate b, 14. Bushing, 15. Discharge plate c, 16. Rotating plate, 17. Arc plate, 18. Bottom plate, 19. Reinforcing rib plate b, 20. Counterweight shaft, 21. Vertical rib plate. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] This utility model relates to the structure of the discharge port opening and closing valve for a metallurgical submerged arc furnace, such as... Figure 1 As shown, it includes a receiving bucket assembly 4, a discharge pipe 2 is provided above the receiving bucket assembly 4, a flange 1 is provided at the bottom of the discharge pipe 2, and a door panel assembly 6 is provided below the receiving bucket assembly 4.

[0026] Example 2

[0027] This utility model relates to a structure for opening and closing a discharge port valve of a metallurgical submerged arc furnace, comprising a hopper assembly 4, a discharge pipe 2 disposed above the hopper assembly 4, a flange 1 disposed at the bottom of the discharge pipe 2, and a door panel assembly 6 disposed below the hopper assembly 4. Based on embodiment 1, as... Figure 2 and Figure 3 As shown, the receiving bucket assembly 4 in this embodiment includes an upper plate 9, which is a rectangular plate. A through hole is opened at the center of the upper plate 9. A feeding plate a10, two feeding plates b13, and a feeding plate c15 are vertically arranged around the lower part of the upper plate 9. The feeding plates a10 and c15 are arranged opposite each other, and the two feeding plates b13 are arranged opposite each other between the feeding plates a10 and c15. The feeding plates a10, b13, and c15 are integrally formed into a surrounding plate below the upper plate 9 to form a feeding channel. A baffle 12 is inclinedly arranged at the lower part of the feeding channel. The area of ​​the baffle 12 does not exceed the cross-sectional area of ​​the feeding channel.

[0028] Example 3

[0029] This utility model relates to a structure for opening and closing a discharge port valve of a metallurgical submerged arc furnace. It includes a hopper assembly 4, a discharge pipe 2 positioned above the hopper assembly 4, a flange 1 positioned at the bottom of the discharge pipe 2, and a door panel assembly 6 positioned below the hopper assembly 4. The hopper assembly 4 includes an upper plate 9, which is rectangular. A through hole is formed at the center of the upper plate 9. A discharge plate a10, two discharge plates b13, and a discharge plate c15 are vertically arranged around the lower part of the upper plate 9. Discharge plates a10 and c15 are positioned opposite each other, and two discharge plates b13 are positioned opposite each other between discharge plates a10 and c15. The discharge plates a10, b13, and c15 are integrally formed below the upper plate 9 to create a surrounding plate, forming a discharge channel. A baffle 12 is inclinedly arranged at the lower part of the discharge channel, and the area of ​​the baffle 12 does not exceed the cross-sectional area of ​​the discharge channel. Based on Example 2, the material cutting plate a10 in this example includes a vertical section a, the upper plate 9 is integrally connected to the vertical section a below, the vertical section a is integrally connected to the bent section b below, the included angle between the vertical section a and the bent section b is an obtuse angle, and the bottom edge of the bent section b is a horizontal straight line.

[0030] The feed plate c15 includes a vertical section c, which is integrally connected to the lower part of the upper plate 9. The vertical section c is positioned opposite to the vertical section a, and the length of the vertical section c is not shorter than that of the vertical section a. The lower part of the vertical section c is integrally connected to the first bending section c, and the angle between the vertical section c and the first bending section c is an obtuse angle. The lower part of the first bending section c is integrally connected to the second bending section c, which bends towards the side closer to the bending section b. A baffle 12 is inclinedly arranged on the second bending section c, and the bottom edge of the second bending section c is a horizontal straight line. The bottom surface of the second bending section c is on the same plane as the bending section b.

[0031] Example 4

[0032] This utility model relates to a structure for opening and closing a discharge port valve of a metallurgical submerged arc furnace. It includes a hopper assembly 4, a discharge pipe 2 positioned above the hopper assembly 4, a flange 1 positioned at the bottom of the discharge pipe 2, and a door panel assembly 6 positioned below the hopper assembly 4. The hopper assembly 4 includes an upper plate 9, which is rectangular. A through hole is formed at the center of the upper plate 9. A discharge plate a10, two discharge plates b13, and a discharge plate c15 are vertically arranged around the lower part of the upper plate 9. Discharge plates a10 and c15 are positioned opposite each other, and two discharge plates b13 are positioned opposite each other between discharge plates a10 and c15. The discharge plates a10, b13, and c15 are integrally formed below the upper plate 9 to create a surrounding plate, forming a discharge channel. A baffle 12 is inclinedly arranged at the lower part of the discharge channel, and the area of ​​the baffle 12 does not exceed the cross-sectional area of ​​the discharge channel. The blanking plate a10 includes a vertical section a, which is integrally connected to the bottom of the upper plate 9. A bent section b is integrally connected to the bottom of the vertical section a. The angle between the vertical section a and the bent section b is an obtuse angle, and the bottom edge of the bent section b is a horizontal straight line.

[0033] The feed plate c15 includes a vertical section c, which is integrally connected to the lower part of the upper plate 9. The vertical section c is positioned opposite to the vertical section a, and the length of the vertical section c is not shorter than that of the vertical section a. A first bending section c is integrally connected to the lower part of the vertical section c, and the angle between the vertical section c and the first bending section c is an obtuse angle. A second bending section c is integrally connected to the lower part of the first bending section c. The second bending section c bends towards the side closer to the bending section b. A baffle 12 is inclinedly arranged on the second bending section c, and the bottom edge of the second bending section c is a horizontal straight line. The bottom surface of the second bending section c is on the same plane as the bending section b. Based on embodiment 3, in this embodiment, a lining plate 11 is laid inside the bending section b, the first bending section c, and the second bending section c.

[0034] Example 5

[0035] This utility model relates to a structure for opening and closing a discharge port valve of a metallurgical submerged arc furnace. It includes a hopper assembly 4, a discharge pipe 2 positioned above the hopper assembly 4, a flange 1 positioned at the bottom of the discharge pipe 2, and a door panel assembly 6 positioned below the hopper assembly 4. The hopper assembly 4 includes an upper plate 9, which is rectangular. A through hole is formed at the center of the upper plate 9. A discharge plate a10, two discharge plates b13, and a discharge plate c15 are vertically arranged around the lower part of the upper plate 9. Discharge plates a10 and c15 are positioned opposite each other, and two discharge plates b13 are positioned opposite each other between discharge plates a10 and c15. The discharge plates a10, b13, and c15 are integrally formed below the upper plate 9 to create a surrounding plate, forming a discharge channel. A baffle 12 is inclinedly arranged at the lower part of the discharge channel, and the area of ​​the baffle 12 does not exceed the cross-sectional area of ​​the discharge channel. The blanking plate a10 includes a vertical section a, which is integrally connected to the bottom of the upper plate 9. A bent section b is integrally connected to the bottom of the vertical section a. The angle between the vertical section a and the bent section b is an obtuse angle, and the bottom edge of the bent section b is a horizontal straight line.

[0036] The feed plate c15 includes a vertical section c, which is integrally connected to the lower part of the upper plate 9. The vertical section c is positioned opposite to the vertical section a, and its length is not shorter than that of the vertical section a. A first bending section c is integrally connected to the lower part of the vertical section c. The angle between the vertical section c and the first bending section c is obtuse. A second bending section c is integrally connected to the lower part of the first bending section c. The second bending section c bends towards the side closer to the bending section b. A baffle 12 is inclinedly installed on the second bending section c. The bottom edge of the second bending section c is a horizontal straight line, and the bottom surface of the second bending section c is on the same plane as the bending section b. Lining plates 11 are laid inside the bending section b, the first bending section c, and the second bending section c. Based on Example 4, in this example, the shapes of the two feeding plates b13 match those of the feeding plates a10 and c15, and the bottom edges of the two feeding plates b13 are arc-shaped. Each feeding plate b13 is integrally provided with a support plate at a position relative to the first bending section c. Rotating holes are opened opposite each other on the upper part of the two support plates, and rotating shafts 8 are rotatably connected inside the two rotating holes. The rotating shafts 8 extend out of the outer periphery of the feeding channel, and rotating plates 16 are respectively connected to the extended parts at both ends of the rotating shafts 8. Bushings 14 are connected to the rotating shafts 8.

[0037] Example 6

[0038] Based on Example 5, such as Figure 4 As shown, the door panel assembly 6 in this embodiment includes two rotating plates 16. The rotating plates 16 are fan-shaped, and the outer arc of the fan shape of the rotating plates 16 matches the bottom arc of the material feeding plate b13. An arc plate 17 is provided between the bottom edges of the two rotating plates 16, and the arc plate 17 fits tightly against the material feeding channel outlet. A base plate 18 is vertically provided on the lower surface of the arc plate 17. A counterweight shaft 20 is horizontally provided on one side of the middle of the base plate 18. A counterweight block 7 is provided at the end of the counterweight shaft 20. A retaining ring is installed at the end of the counterweight shaft 20 to prevent the counterweight block 7 from falling off.

[0039] Several limiting blocks 5 are provided on the outer walls of both feeding plates b13 to limit the maximum rotation position of the rotating plate 16.

[0040] Several reinforcing ribs b19 are provided between the base plate 18 and the counterweight shaft 20.

[0041] The rotating plate 16 is uniformly provided with several stiffening plates 21 along the diameter direction.

[0042] The discharge pipe 2 is welded to the flange 1. A reinforcing rib plate a3 is set around the top outer periphery of the flange 1. The bottom of the reinforcing rib plate a3 is connected to the outer periphery of the upper surface of the upper plate 9. The reinforcing rib plate a3 is connected between the upper plate 9 and the flange 1.

[0043] The working principle of the discharge port opening and closing valve of this utility model for a metallurgical submerged arc furnace is as follows: The receiving hopper assembly 4 is formed by vertically surrounding a discharge plate a10, two discharge plates b13, and a discharge plate c15 below the upper plate 9, creating a fully sealed discharge channel. A baffle 12 is inclinedly installed at the lower part of the discharge channel. External force acts on the end of the counterweight shaft 20, driving the bottom plate 18 to push the rotating plate 16. The rotating plate 16 rotates around the rotating shaft 8, and the material falls from the discharge pipe 2 onto the liner 11 and is discharged through the discharge port of the discharge channel formed by the baffle 12. The discharge pipe 2 is fixedly welded to the upper plate 9 in the receiving hopper assembly 4 through the flange 1. The rotating shaft 8 drives the rotating plate 16 in the door panel assembly 6 to rotate, causing the arc plate 17 to open and close, realizing the rapid opening and closing of the discharge port valve. Under the action of external force, the arc plate 17 opens smoothly; when no force is applied, the arc plate 17 closes to block the material outlet. The baffle 12 is inclined, allowing the sinter to roll freely under gravity. The sinter particles will tumble as they move downwards, increasing air permeability and making the feeding smoother and more complete. Lining plates are laid inside the bending section b, the first bending section c, and the second bending section c, so the pipe is not easily worn through during the feeding process, and frequent maintenance is not required, reducing the operating cost of the equipment. The quick opening and closing of the discharge valve also makes the transportation and feeding of sinter more convenient and faster.

[0044] The working process of the discharge port opening and closing valve of this utility model for a metallurgical submerged arc furnace is as follows: the feeding car travels to the outlet of the discharge channel that is tightly fitted with the arc plate 17, and the feeding car directly pushes the counterweight shaft 20. The material in the material pipe passes through the discharge channel and is placed into the hopper of the feeding car. After the hopper of the feeding car is full, the feeding car reverses. After the counterweight shaft 20 loses the thrust of the feeding car, the arc plate 17 returns to its initial position under the external force of the counterweight block 7, closing the discharge channel. Then the feeding car travels to the furnace outlet and pushes the material into the furnace. This process is repeated according to production needs until the material added to the furnace meets the production requirements. The whole process achieves the purpose of opening the valve when the feeding car arrives and closing the valve when the feeding car leaves.

[0045] This invention relates to a discharge port opening and closing valve for a metallurgical submerged arc furnace. By combining this valve with the existing discharge pipe 2 structure, the upper plate 9 of the receiving hopper assembly 4 only needs to connect to the lower end of the discharge pipe 2, thus minimizing production costs. The discharge channel is adapted to the curvature of the arc plate 17 in the door panel assembly 6. The arc plate 17, base plate 18, and counterweight shaft 20 are connected as a whole. The arc plate 17, as a whole, is driven by the external force of the counterweight block 7, causing the rotating plate 16 to rotate around the rotating shaft 8. During the reciprocating swing, the operator only needs to pull the counterweight shaft 20 to open and close the discharge port. This invention has a simple structure, requires no external force to control the valve opening and closing, reduces its failure rate, has low operating costs, few operational failures, and improves smelting production efficiency.

Claims

1. A valve for opening and closing the discharge port of a metallurgical submerged arc furnace, characterized in that, It includes a receiving bucket assembly (4), a discharge pipe (2) is provided above the receiving bucket assembly (4), a flange (1) is provided at the bottom of the material pipe (2), and a door panel assembly (6) is provided below the receiving bucket assembly (4). The receiving bucket assembly (4) includes an upper plate (9), which is a rectangular plate. A through hole is opened at the center of the upper plate (9). A feeding plate a (10), two feeding plates b (13), and a feeding plate c (15) are vertically arranged around the lower part of the upper plate (9). The feeding plates a (10) and c (15) are arranged opposite to each other. Two feeding plates b (13) are arranged opposite to each other between the feeding plates a (10) and c (15). The feeding plates a (10), b (13), and c (15) are integrally formed into a surrounding plate below the upper plate (9) to form a feeding channel. A baffle (12) is inclinedly arranged at the lower part of the feeding channel.

2. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 1, characterized in that, The feed plate a (10) includes a vertical section a, the upper plate (9) is integrally connected to the vertical section a below, the vertical section a is integrally connected to the bent section b below, the included angle between the vertical section a and the bent section b is an obtuse angle, and the bottom edge of the bent section b is a horizontal straight line.

3. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 2, characterized in that, The feed plate c (15) includes a vertical section c. The vertical section c is integrally connected to the lower part of the upper plate (9). The vertical section c is set opposite to the vertical section a. The length of the vertical section c is not shorter than that of the vertical section a. The first bending section c is integrally connected to the lower part of the vertical section c. The angle between the vertical section c and the first bending section c is an obtuse angle. The second bending section c is integrally connected to the lower part of the first bending section c. The second bending section c bends towards the side closer to the bending section b. The bottom edge of the second bending section c is a horizontal straight line. The bottom surface of the second bending section c is on the same plane as the bending section b.

4. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 3, characterized in that, Lining plates (11) are laid inside the bending section b, the first bending section c, and the second bending section c.

5. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 4, characterized in that, The shapes of the two feeding plates b (13) match those of the feeding plates a (10) and c (15), and the bottom edges of the two feeding plates b (13) are arc-shaped. Each feeding plate b (13) is integrally provided with a support plate relative to the first bending section c. Rotating holes are opened at the upper part of the two support plates, and rotating shafts (8) are rotatably connected inside the two rotating holes. The rotating shafts (8) extend out of the outer periphery of the feeding channel. The extended parts at both ends of the rotating shafts (8) are respectively connected to rotating plates (16), and bushings (14) are connected to the rotating shafts (8).

6. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 5, characterized in that, The door panel assembly (6) includes two rotating plates (16), which are fan-shaped. The outer arc of the rotating plate (16) matches the bottom arc of the material feeding plate b (13). An arc plate (17) is set between the bottom edges of the two rotating plates (16), and the arc plate (17) fits tightly against the material feeding channel outlet. A base plate (18) is vertically set on the lower surface of the arc plate (17), and a counterweight shaft (20) is horizontally set on one side of the middle part of the base plate (18). A counterweight block (7) is set at the end of the counterweight shaft (20).

7. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 6, characterized in that, Several limiting blocks (5) are provided on the outer walls of the two feeding plates b (13).

8. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 7, characterized in that, Several reinforcing ribs b (19) are provided between the base plate (18) and the counterweight shaft (20).

9. The discharge port opening and closing valve for a metallurgical submerged arc furnace according to claim 8, characterized in that, The rotating plate (16) is uniformly provided with several stiffeners (21) along the diameter direction.

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